Bathroom sink



FIG. 1 is a perspective view from the front and above of the bathroom sink according to my new design;

FIG. 2 is a perspective view from the left, front and above thereof;

FIG. 3 is a perspective view from the left side thereof, the appearance from the right side thereof being a mirror image; and

FIG. 4 is a top plan view thereof. 

The ornamental design for a bathroom sink, as shown and described. 